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Harsha Alva
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"Connect and forget" bare-bones arduino with captive rechargeable battery.

Abhi Ravi

Need an Arduino with the least additions and the smallest size possible. It should also have a captive rechargeable battery.

How do I take a stab at this?

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Abhi Verma

Gave a detailed idea for a bare-bones Arduino with captive power. 馃槂

Ravi Pujar

Explained how an Arduino can be built from scratch.

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Harsha Alva
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聽路聽Mangaluru,聽India
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Abhi Sounds excellent. Thanks for a detailed explanation.

Ravi Is this marketable?

Steven Is this good enough to receive a funding.

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Ravi Pujar
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Embedded systems engineer, Founder @Valetron Systems, Blogger @www.raviyp.com
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Harsha
What is the processor you are looking at?
It should be quite simple with a Atmega chip with super small QFN package with minimum addition of crystal, a LED, a micro USB connector, a 3.3V LDO if necessary, TP4056 battery charger.

If you are planning to use a Lithium battery (max voltage 4.2V) you need to run your MCU at 3.3V.

What do you mean by captive?
What specific application you are looking at?
If there is a specific application requirement for such a setup then its definitely marketable. Arduino are used more because of the easy coding and the pluggable shields, which we wont be able to support due to small size and different footprint.

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Abhi Verma
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ROBOToTHON 2017 Mentor, Electronics Engineer
聽路聽Delhi,聽India
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even i was also thinking about developing a super small arduino mini with minimum components. but i,m also not sure about the market. may be people will accept it for small size and lower prices.

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Harsha Alva
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Ravi Thanks for the explanation.

By captive, I mean localized and supply power only to the Arduino without the need for external supplies. This is not for prototyping, but for small projects where you would add an Arduino to a bigger circuit for processing, etc.

Also, instead of USB, pin headers will be provided to attach to external programmers.

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Ravi Pujar
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Embedded systems engineer, Founder @Valetron Systems, Blogger @www.raviyp.com
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Harsha So you will provide charging pins as headers instead of USB?
Thats very much possible and you should be able to achieve it easily. Also when you are running a device continuously from battery, think of providing a deep discharge protection also.

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Harsha Alva
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Ravi Yes, both charging and programming pins will be provided. Programming will be like ICSP on regular arduinos.

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